Result: West Brom 0-5 Man City - Gundogan (2), Cancelo, Mahrez & Sterling send City top
Result: Southampton 1-3 Arsenal - Pepe, Saka & Lacazette after Armstrong opener
Result: Crystal Palace 2-3 West Ham - Soucek double & Dawson; Zaha & Batshuayi for Eagles
Result: Newcastle 1-2 Leeds - Raphinha & Harrison either side of Almiron equaliser
Chelsea confirm Tuchel appointed as new manager
Southampton 1-3 Arsenal
Sloppy few moments for David Luiz. He gives it away on the halfway line then steps over the ball as he tries to let it roll through for Bernd Leno in the box.
Che Adams almost pokes it in but Rob Holding reacts to put pressure on him and Leno is out sharply to gobble the ball up.
FT: Inter Milan 2-1 AC Milan
By the way, the drama is over in Italy as Christian Eriksen scored a winner in the 97th minute for Inter Milan.
They are through to the Coppa Italia semi finals.
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Arsenal are 4 points behind Liverpool. Did see that coming in December
Steve, London
West Brom need to get Derek McInnes in now to bring some stability. He was loved at WBA as a player, is a steady manager and wouldn't cost much from Aberdeen.
Elliot
West Brom 0-5 Man City
Matty Phillips drives into the box and looks to clip a cross towards the six-yard box, but it's well cleared. Best moment of the half for West Brom.
Southampton 1-3 Arsenal
Daniel N'Lundulu almost gets there ahead of David Luiz as the ball is loose in the Arsenal box but Cedric Soares comes across to cover and wins a free-kick.
West Brom 0-5 Man City
Lovely, whipped ball from Joao Cancelo and Ferran Torres almost gets his head to it. Instead it's nodded behind for the seventh City corner of this half.
West Brom have gone 21 minutes without conceding.
Southampton 1-3 Arsenal
Alistair Bruce-Ball
BBC Radio 5 live commentator
Bukayo Saka has such good vision and composure for a young player.
Image source, EPASouthampton 1-3 Arsenal
Thomas Partey has picked up a knock now. Looks like cramp? Mohamed Elneny is on in his place.
West Brom 0-5 Man City
City have just been completely dominant. Most of the game has been played on the edge of the West Brom box and the hosts have struggled to get any further upfield than that.
Ferran Torres' flick is cut out this time.
Southampton 1-3 Arsenal
Changes for Southampton now. Danny Ings and Che Adams are off. Caleb Watts and Daniel N'Lundulu are on.
Just to confirm, they have actually gone off. And neither have picked up a yellow in the process.
West Brom 0-5 Man City
Conor McNamara
BBC Radio 5 live commentator
The scoreline is still 5-0, so West Brom have got that in their favour! It's been one-way traffic right from the get go.
Raheem Sterling has now had a hand in six goals in his last four Premier League games - two of them he has scored, two assists.
Image source, EPAWest Brom 0-5 Man City
Brilliant from Raheem Sterling to wriggle beyond three West Brom defenders and win another corner. Kyle Bartley does well to get a toe to it.
Alexandre Lacazette
Cedric Soares plays an incredible diagonal ball over to Bukayo Saka. He tees up Alexandre Lacazette with a first-time cross and the striker puts it in from a yard out at the back post.
Stunning goal! Mad few minutes.
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Ray Smart: Feel a little sorry for Allardyce tonight. City are on magnificent form at the moment, even with a couple of their best players injured they just seem to be able to get almost every pass right.
Graham: Big Sam is completely out of his depth and yesterday’s man. It’s like asking a mechanic to have a look at your broken laptop. Not a clue how to fix it.
Southampton 1-2 Arsenal
Oh. Well this is strange. Nicolas Pepe is no longer going off as Emile Smith Rowe went down injured just as Pepe was strolling off.
It means he's going off. Willian is coming on and Nicolas Pepe is staying on. Gabriel Martinelli will have to wait too.
Pepe still has a yellow! Very confusing...
West Brom 0-5 Man City
Nice one-two between Riyad Mahrez and Raheem Sterling to release the captain down the wing, as City just ease through the gears. They win a corner, but it's headed clear.
It's just coming back at West Brom though, they can't hold on to the ball.
Southampton 1-2 Arsenal
Nicolas Pepe gets a yellow card before he heads off! He's taking way too long and the referee isn't happy.
Southampton 1-2 Arsenal
Gabriel Martinelli is on for Arsenal. He replaces Nicolas Pepe.
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As a West Ham fan, seen all this before from Big Sam. He decides beforehand what games to try in and which to just write off. He clearly wrote this off to focus on Fulham. He won't care how many WBA concede tonight as he always saw it as a loss.
Matt, London
WBA getting what they deserve im afraid, dismissing Bilic and appointing Allardyce was a desperate decision that has backfired badly.
Tim, Bristol
West Brom 0-5 Man City
Gabriel Jesus and Ferran Torres go down in the box, but they ran into each other.
Best bit of defending in the West Brom box all evening.